A monolithic semiconductor substrate

Chip Design Journal

Subscribe to Chip Design Journal: eMailAlertsEmail Alerts newslettersWeekly Newsletters
Get Chip Design Journal: homepageHomepage mobileMobile rssRSS facebookFacebook twitterTwitter linkedinLinkedIn


Chip Design Authors: Jason Bloomberg, Trevor Bradley, David Strom

Related Topics: Chip Design

Chip Design: Article

California Micro Devices Introduces New Generation of Praetorian(TM) EMI Filters for Wireless Handsets

California Micro Devices Introduces New Generation of Praetorian(TM) EMI Filters for Wireless Handsets

MILPITAS, California, February 7 /PRNewswire/ --

- CM1450 and CM1451 Integrate Spiral Inductors to Deliver Unsurpassed EMI Filtering Performance

California Micro Devices (Nasdaq: CAMD) today introduced the first generation of Praetorian(TM) ASIP(TM) (Application Specific Integrated Passive(TM)) EMI (electromagnetic interference) inductor-based filter arrays, offering superior filter performance combined with robust ESD (electrostatic discharge) protection. With demand surging for advanced multimedia capabilities in wireless handsets, designers are facing new challenges, specifically in clamshell phones where avoiding EMI is especially difficult. Data rates from the processor to the high resolution display and from the camera module have dramatically increased, creating new EMI filtering and ESD protection issues. To address these requirements, CMD has developed patent- pending Praetorian(TM) process technology. This groundbreaking technology allows the integration of spiral inductors with resistors, capacitors and ESD protection diodes in a single chip design. As a result, CMD's new generation CM1450 and CM1451 Praetorian(TM) EMI filters offer high cutoff frequencies, minimal insertion loss, sharp rolloff, excellent signal integrity and greater levels of attenuation at high frequencies.

(Photo: http://www.newscom.com/cgi-bin/prnh/20050207/SFM042-a http://www.newscom.com/cgi-bin/prnh/20050207/SFM042-b )

Key Features

The CM1450 and CM1451 Praetorian(TM) EMI filters with ESD protection are offered in a space saving CSP (chip scale package) form factor. Both products are based on a 5-pole LC filter architecture (15pF-17nH-15pF-17nH-15pF and 10pF-17nH-10pF-17nH-10pF respectively), which attenuate signals by 35dB or better over a frequency range of 800MHz to 2.7GHz. For the frequency range of 3GHz to 6GHz, the level of attenuation is greater than 30dB. These new products are ideal for filtering high resolution display and camera modules interfaces with data rates between 120Mbps to 160Mbps. In addition, unlike RC filters, LC filters do not significantly degradee signal rise times. They are available in both 6 and 8 channel formats. In addition to filtering, both products also provide ESD protection up to +/- 15kV contact discharge per IEC61000-4-2 Level 4 specification.

Reinforced Value Proposition

The new Praetorian(TM) products demonstrate CMD's commitment to help its customers improve overall system robustness. The industry leading EMI filter performance of the CM1450 and CM1451 address requirements that cannot be met by discrete components or ceramic filters. With these products, CMD has continued to offer best-in-class performance, significant space savings and reduction of the overall cost of ownership.

Pricing and Availability

The CM1450 is currently sampling, and pricing starts at US$0.85 each in 1,000 units for the six channel version. The CM1451 will be sampling later this month. Production for both families is scheduled for Q2 2005. The standard version of both products is in a lead free CSP package featuring CMD's OptiGuard(TM) coating for increased robustness and durability.

About California Micro Devices Corporation

California Micro Devices Corporation is a leading supplier of application specific analog semiconductor products for the mobile, computing and digital consumer markets. Key products include Application Specific Integrated Passive(TM) (ASIP(TM)) devices plus power management and interface ICs. Detailed corporate and product information may be accessed at www.calmicro.com.

NOTE: ASIP(TM), Application Specific Integrated Passive(TM), OptiGuard(TM) and Praetorian(TM) are trademarks of California Micro Devices. All other trademarks are property of their respective owners.

Web site: http://www.calmicro.com

California Micro Devices Corporation

Richard Haas of California Micro Devices Corporation, +1-408-934-3108, or [email protected] / Photo: NewsCom: http://www.newscom.com/cgi-bin/prnh/20050207/SFM042-a http://www.newscom.com/cgi-bin/prnh/20050207/SFM042-b AP Archive: http://photoarchive.ap.org. PRN Photo Desk, [email protected]

More Stories By Christoph Menken

Christoph Menken is a senior developer and consultant on Power People (www.powerpeople.de) and a frequent speaker at the PowerBuilder User Group Germany (www.pbugg.de). He has been using PowerBuilder since version 5.0 and PocketBuilder since version 1.5.

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.